WPF:如何处理对ListBox项的单击? [英] WPF: how do i handle a click on a ListBox item?

问题描述

在我的WPF应用程序中，我正在处理一个ListBox SelectionChanged事件，它运行良好.

In my WPF app I'm handling a ListBox SelectionChanged event and it runs fine.

现在，我需要处理一个点击事件(即使对于已经选择的项目)；我已经尝试过MouseDown，但是它不起作用.如何处理列表框在项目上的单击?

Now I need to handle a click event (even for the already selected item); I've tried MouseDown but it does not work. How can I handle a ListBox click on an item?

推荐答案

只需处理PreviewMouseDown事件:

Just handle PreviewMouseDown event:

private void listBox_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
    var item = ItemsControl.ContainerFromElement(listBox, e.OriginalSource as DependencyObject) as ListBoxItem;
    if (item != null)
    {
        // ListBox item clicked - do some cool things here
    }
}

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